XML 46 R5.htm IDEA: XBRL DOCUMENT v2.4.1.9
Statement of Changes in Stockholders' Equity (USD $)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit during Development Stage [Member]
Balance at May. 29, 2014 $ 0us-gaap_StockholdersEquity $ 0us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 0us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 0us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balance (In Shares) at May. 29, 2014   0us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Issuance of common stock to Sponsors 25,000us-gaap_StockIssuedDuringPeriodValueNewIssues 288us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
24,712us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Issuance of common stock to Sponsors (In Shares)   2,875,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Cancellation of 575,000 shares of common stock 0hdrau_StockIssuedDuringPeriodValueCommonStockCancelled (58)hdrau_StockIssuedDuringPeriodValueCommonStockCancelled
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
58hdrau_StockIssuedDuringPeriodValueCommonStockCancelled
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0hdrau_StockIssuedDuringPeriodValueCommonStockCancelled
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Cancellation of 575,000 shares of common stock (in Shares)   (575,000)hdrau_StockIssuedDuringPeriodSharesCommonStockCancelled
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Sale of 8,000,000 Units, net of underwriters discount and offering expenses 74,776,704us-gaap_StockIssuedDuringPeriodValueOther 800us-gaap_StockIssuedDuringPeriodValueOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
74,775,904us-gaap_StockIssuedDuringPeriodValueOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0us-gaap_StockIssuedDuringPeriodValueOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Sale of 8,000,000 Units, net of underwriters discount and offering expenses (in Shares)   8,000,000us-gaap_StockIssuedDuringPeriodSharesOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Sale of 7,500,000 Private Placement Warrants 3,750,000us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued 0us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
3,750,000us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Forfeiture of 300,000 shares of common stock due to underwriters not exercising their over-allotment option 0hdrau_StockIssuedDuringPeriodValueCommonStockForfeiture (30)hdrau_StockIssuedDuringPeriodValueCommonStockForfeiture
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
30hdrau_StockIssuedDuringPeriodValueCommonStockForfeiture
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0hdrau_StockIssuedDuringPeriodValueCommonStockForfeiture
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Forfeiture of 300,000 shares of common stock due to underwriters not exercising their over-allotment option (in Shares)   (300,000)hdrau_StockIssuedDuringPeriodSharesCommonStockForfeiture
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Common stock subject to redemption (73,410,170)hdrau_CommonStockSubjectToRedemptionValue (734)hdrau_CommonStockSubjectToRedemptionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(73,409,436)hdrau_CommonStockSubjectToRedemptionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
0hdrau_CommonStockSubjectToRedemptionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Common stock subject to redemption (in Shares)   (7,341,017)hdrau_CommonStockSubjectToRedemptionShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
   
Net loss (141,529)us-gaap_NetIncomeLoss 0us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
0us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(141,529)us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balance at Dec. 31, 2014 $ 5,000,005us-gaap_StockholdersEquity $ 266us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 5,141,268us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (141,529)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedDeficitDuringDevelopmentStageMember
Balance (In Shares) at Dec. 31, 2014   2,658,983us-gaap_SharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember